FHA 646 R
1 /1Page

FHA 646 R

FHA 646 R
1 /1Page

Catalog excerpts

FHA 646 R-1

• Compact sensor, extremely small dimensions • Wide operating temperature range • Particularly suitable for measuring operations between PCBs, Technical data Operative range Humidity measuring circuit Measuring range 0 to 100 % RH Sensor Accuracy Reproducibility Nominal temperature Response time T63 ±2 % RH in the range <90 % RH at nominal temperature <1 % RH at nominal temperature +25 ±3 °C Air humidity inside cases, in walls, ceilings, and insulation layers used in the construction industry, and for the protection of listed historic monuments Temperature measuring circuit Sensor NTC type N Mechanical design Sensor tube nickel-plated, 50 mm long, 5 mm 0 Cable High-temperature cable (up to +100 °C), 2 meters long, with ALMEMO® plug (no other lengths available) ! The sensor can only be operated by plugging DIRECTLY onto an ALMEMO® device. (NOT with extension cables ZA9060VKx or ZA9090VKCx). Or alternatively, the following sensor types can be used. FHAD36RAS up to +100 °C FHAD46-C2 or FHAD46-C0 Compact design 11/2025 • We reserve the right to make technical changes. Accessories Order no. PTFE filter, inside diameter 5 mm suitable for protection against dust, not water-proof Variants Order no. Miniature sensor for temperature / humidity, with fitted high-temperature cable, length 2 meters, with ALMEMO® plug FHA646R DAkkS accredited calibration or factory calibration KH9xxx temperature, humidity for measuring chain (sensor + device), see chapter „Calibration certificates“. DAkkS accredited calibration meets all the requirements regarding test resources laid down in DIN EN ISO/IEC 17025.

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